**3. Conclusions**

Films based on biopolymers have proven their applicability in various fields and can replace conventional materials based on non-renewable resources. The ease of incorporating various active substances into the matrix of films has contributed to their success. Essential oils present numerous benefits, both for the products packaged in such materials and in terms of the health of those who consume the edible films and coatings. Our results highlighted the use of essential oil favoring stability of the materials, even after one year of storage. The films with incorporated essential oils were preserved their properties after one year storage compared to the initial period. These positive effects were not present in the control samples. Therefore, the addition of plant-extracted oils to biopolymer products is associated with significant benefits, making them suitable for use in several industries. However, additional research is required to determine their mechanism of action, their prolonged effects and the synergistic effects that may occur when used in combination with other essential oils or biologically active substances, as well as their adverse effects.
